MATERIALS LETTERS

CHEN D, WANG G, LI JH, GUO QL, YE L, ZHOU HJ, ZHENG L, ZHANG M, LIU S

APPLIED PHYSICS LETTERS

WANG G, CHEN D, LU ZT, GUO QL, YE L, WEI X, DING GQ, ZHANG M, DI ZF, LIU S